Hooray.. Dyno sheet
#11
04-27-2010 | 08:58 PM
Intermediate
Joined: Apr 2009
Posts: 47
Likes: 0
Here is my Dyno chart from the 1,000 mile maintenance. Although the stage 1, Shortshots and SE pro tuner were done at delivery they waited until after the maintenace to do the dyno. I'd like to see a stock chart for comparison. It might be tough to read: Max HP = 75.62, max torque = 73.81
By the way where do you find instructions for imbeding an image in a post rathar than as an attached thumbnail?
By the way where do you find instructions for imbeding an image in a post rathar than as an attached thumbnail?
#13
04-27-2010 | 09:10 PM
Road Captain
Joined: May 2007
Posts: 561
Likes: 65
From: Fredericksburg, VA
Finally got it done. With the Heavy Breather and V&H Comp. 2-1 exhaust, there is a dip in the torque between 2500 and 3300 RPM. Not really able to "tune it out" but its not a bad set of numbers.
2009 Nightster 1200
Screamin Eagle Heavy Breather
Vance and Hines Competition Series 2-1
PCV
Nothing else.
2009 Nightster 1200
Screamin Eagle Heavy Breather
Vance and Hines Competition Series 2-1
PCV
Nothing else.
#15
04-28-2010 | 06:58 AM
Road Master
Joined: Jun 2009
Posts: 933
Likes: 1
From: Indianapolis
+1 Fox4
2:2 pipes do tend to have a dip or two in their tq curve, BUT short 2:1 systems can have the same. Nice long pipes, and not too little resistance on the intake side seem to make curves much smoother. My 2-1 is actually shorter than the shortshots, but not by much. New pics to come.
We worked on it for bout 2 hours, and that dip aint goin anywhere. The V&H Comp 2-1's still have a pretty short baffle. Big torque difference over my sideshots. The pull is much stronger and consistent. I have also heard that running the stock cams/ springs over 6500 rpm is not the best thing. I told my tuner to keep it at 6400.
Anywho, next on the list is Thunderstorm heads, and cams (N3's maybe). Well see where that takes it.
2:2 pipes do tend to have a dip or two in their tq curve, BUT short 2:1 systems can have the same. Nice long pipes, and not too little resistance on the intake side seem to make curves much smoother. My 2-1 is actually shorter than the shortshots, but not by much. New pics to come.
We worked on it for bout 2 hours, and that dip aint goin anywhere. The V&H Comp 2-1's still have a pretty short baffle. Big torque difference over my sideshots. The pull is much stronger and consistent. I have also heard that running the stock cams/ springs over 6500 rpm is not the best thing. I told my tuner to keep it at 6400.
Anywho, next on the list is Thunderstorm heads, and cams (N3's maybe). Well see where that takes it.
I have the sideshots and ever since I found the competition series pipe I have been contemplating swapping for it. Its just soo expensive. But I really think it is one of maybe two 2:1's that looks good on the sportster. Are you happy you made the switch as far as looks and performance go?
#16
04-28-2010 | 08:23 PM
Road Captain
Joined: May 2008
Posts: 608
Likes: 0
From: Westchester, New York
I think the PCV might be suspect for that torque dip. If you look at the print outs, the two with the PCV have similar dips. My PCIII doesn't have as severe a dip (I have 2:2's) nor do the others. Not sure how much of that can be felt by the seat of the pants, maybe not at all, but just a thought
Last edited by SHTFIT; 04-28-2010 at 08:25 PM.
#17
04-28-2010 | 11:00 PM
Thread Starter
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Tourer
Joined: Mar 2009
Posts: 253
Likes: 1
From: Virginia Beach
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